A glimpse into what to expect at Rio has been provided world No.1 swimmer Cameron McEvoy - and he likes what he sees.
Australia's McEvoy began his final warm-up event, the two-day Brisbane Grand Prix, on Friday assured top billing in the 100m freestyle at Rio despite Olympic champion Nathan Adrian's best efforts.
Adrian - the man who denied James Magnussen gold at London - clocked 47.72 seconds to claim the 100m title at the US trials, ensuring he will be able to defend his Olympic title at Rio.
Adrian is finding form, breaking the 48 second barrier for the first time in three years at the US trials.
But his effort was well short of McEvoy's 2016 world's fastest time - a blistering 47.04 at April's trials, the fastest outside of the supersuit era and third quickest all-time.
McEvoy will hope to go one better than Magnussen who also entered the London Games as a hot 100m favourite.
McEvoy will be Australia's main 100m hope after relay swimmer Magnussen failed to qualify for an individual event at Rio.
McEvoy warmed up for the Brisbane Grand Prix by claiming the 100m final on Friday night in 48.43.
Magnussen was second in 48.49 - his fastest time since 2015 shoulder surgery.
Meanwhile, dual world champion Mitch Larkin won the 100m backstroke final in 53.22.
The US trials have provided a reality check for Larkin.
The reigning FINA Male Swimmer of the Year was relegated to third in the 100m backstroke rankings behind David Plummer and Ryan Murphy after they booked their Rio ticket at the US trials.
Meanwhile, Cate (24.04) impressed to win the 50m freestyle final ahead of sister and world champion Bronte Campbell (24.47).
The Dolphins team assembled in Brisbane on Thursday night, receiving their team blazer from Olympic great Dawn Fraser in a special presentation ceremony.
It was a rare chance for the team to don their blazer.
In a first, Australia head coach Jacco Verhaeren has pulled his entire swimming squad from the Rio Olympic opening ceremony team march on August 5.